Posted: 10/1/2016 9:19:18 PM EDT
| Reliability poll for AR 9 Colt pattern |
| I have a few 9mm ARs - all with mag blocks (not dedicated 9mm). I used a Spike's block in one, and i think the others are Hahn. It's been years since I built them, so I forget now what I used. They work 100% with C-Products mags. They are crappy as heck with plastic Promag mags. But I can drop the block down a little, and they run okay (just a few malfunctions) with the Promags. So I wasn't sure how to answer your poll. I put the middle option (some issues) because it took tinkering to find the right place to set the mag blocks to get 100% function. |
| My AR9 is a mix of parts, but its a PSA Colt style lower with hybrid BCG. Barrel is a 8.5" faxon and upper receiver is a regular mil spec AR15 upper. My rifle does not eject reliably. I tweaked the ejector so that now its rubbing very slightly on the side of the bolt. Before I bent it there was a noticeable gap between the ejector and the bolt. I haven't had a chance to take it to the range to see if its fixed, but the first 2 range trips were a bust. I got 2 or 3 rounds to cycle reliably, but it mostly jammed every round. This was with both factory ammo and hand loads. |
Got mine out to the range today. Only the lower, buffer and mags are PSA. First 100 rounds had a few failures to feed due to the bolt catch finger being too long and prematurely locking the bolt back. I had read about this being a potential problem, so filed it down about .030 and continued shooting. Shot another 400 rounds with no issues.
|